Display screen or portion thereof with transitional graphical user interface



FIG. 1 is the first image in a sequence of a display screen or portionthereof with transitional graphical user interface showing our newdesign;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof;

FIG. 5 is the fifth image thereof;

FIG. 6 is the sixth image thereof;

FIG. 7 is the seventh image thereof;

FIG. 8 is the eighth image thereof,

FIG. 9 is a partial enlarged view of FIG. 1, showing only the upper halfof the image to clearly show the claimed subject matter;

FIG. 10 is a partial enlarged view of FIG. 2, showing only the upperhalf of the image to clearly show the claimed subject matter;

FIG. 11 is a partial enlarged view of FIG. 3, showing only the upperhalf of the image to clearly show the claimed subject matter;

FIG. 12 is a partial enlarged view of FIG. 4, showing only the upperhalf of the image to clearly show the claimed subject matter;

FIG. 13 is a partial enlarged view of FIG. 5, showing only the upperhalf of the image to clearly show the claimed subject matter;

FIG. 14 is a partial enlarged view of FIG. 6, showing only the upperhalf of the image to clearly show the claimed subject matter;

FIG. 15 is a partial enlarged view of FIG. 7, showing only the upperhalf of the image to clearly show the claimed subject matter; and,

FIG. 16 is a partial enlarged view of FIG. 8, showing only the upperhalf of the image to clearly show the claimed subject matter.

In FIGS. 1-8, the outermost dashed broken line rectangle illustrates adisplay screen. In FIGS. 9-16, the vertical lines at the left and rightsides of each figure and the horizontal line at the top of each figureillustrate a portion of a display screen. In all figures, the remainingdashed broken lines illustrate portions of the graphical user interface.None of the broken lines form part of the claimed design.

The appearance of the graphical user interface sequentially transitionsbetween the images shown in FIGS. 1-8. This process or period in whichone image transitions to another image forms no part of the claimeddesign.

CLAIM The ornamental design for a display screen or portion thereof withtransitional graphical user interface, as shown and described.